Apparatus for producing images of objects.



No. 815,170. PATENTED MARLlS, 1906.

Jpn. HOOPER. I APPARATUS FOR PRODUCING IMAGES OF OBJECTS.

APPLIOATIOH FILED DEG. 17 1904.

2 SHEETS-SHEET 1.

INVENTO R {Ellen ac);

ATTO RN KY5 PATENTED MAR. 13, 1906.

J. R. HOOPER.

APPARATUS FOR PRODUCING IMAGES OF OBJECTS.

APPLICATION FILED DEC.17,1904' ZSHEETS-SHEET 2 INVENTOR .5. E S S E A N w w UNITED STATES PATENT OFFICE.

APPARATUS FOR PRODUCING IMAGES OF OBJECTS.

Specification of Letters Patent.

ratentecl March 13, 1906.

Application filed December 17, 1904. s6l'lll No. 237,256.

To all whom it may concern.-

Be it known that I, JAMES R. HOOPER, a

' citizen of the United States, residing at Pitts burg, in the county of Allegheny and State of Pennsylvania, have invented or discovered newand useful Improvements in Ap aratus for Producing Images of Objects, 0 which thefollowing is a specification.

My invention relates to apparatus for producing images of objects and is in the nature of a camera lucida.

The object thereof is to produce such an apparatus that the images to be co ied may be reduced or enlarged as compare with the size 01 the originals to anydesired extent.

Referring to the: drawings, Figure 1 is a perspective of my invention; Fi 2, a crosssection on the line 2 2 of Fig. 1 3, a fragmentary view showing the microscope and its adjustments, the view being partly in plan and partly in horizontalsection Fig. 4, a vertical section on the line 4 4 of Fig. 3, the microscope being in side elevation; Fig. 5; a cross-section of the prism and its holder, and Fig. 6 a section showing the joint for the rotation of the prism in a horizontal plane.

In the drawings, 1 designates a table having the upright object-s'u port 2, which is shown as a flat surface, to w ich the object 3 is tacked; but it may be otherwise constructed. The post or support 4 is clamped to one edge of the table by means of the set-screw 5,wh'ich passes through the member 6 and engages with the under side of the table. The member 6 is secured to the post 4 and is spaced from the bottom of the latter by a little more than the thickness of the table. screw is turned up tight against the table, the ost or support 4 is rigidly secured to the talo and may be readily adjusted to occupy any osition along the edge thereof.

Shdable vertically within the support 4 is the extension 7, which ma be secured at any adjustment in the support by the set-screw 8..

On the top of the extension 7 is a socket 9, which receives the head 10, rotatable horizontally onthe antifriction-rollers 11. The head 10 carries the vertical stem 12', havin at its top the cars 13 between which is seate the ear 14 of the horizontal collar 15, the pin 16 assing through all three ears and constitutlng a horizontal pivot on which the collar 15 swings. The pin 16 is threaded and carries the nut 17, which turns against one of cars 13 and clamps all the ears together to When the hold the collar 15 in the required adjustment.

Slidable in the collar 15 is the horizontal rod 18, which is held in any adjustment in the collar by the set-screw 19 and is prevented from rotation by the horizontal slots 20 in the rod 18, into which slot the ribs 21 in the collar .extend. The rod 18 carries a number of telesco ic sections 22, the outerone carrying the 24, consisting of two overlapping members, having therebetween an opening to receive the prism-holdin rod 25, which is adj ustable horizontally in tile holder'and is held in any adjustment by the screw 26. The end of the rod 25 carries the prism-holder 27, carrying the usual "eamera-lucida rism. The paper or surface 28, on which t e image 29 of the object3 is traced, is secured on the table 1 beneath the prism.

The rod 18 carries the horizontal arms 30, which support the rod or'bar 31, on which slides the saddle 32, carried by the rod 33, having an end concave part 34 sliding on the under side of the rod 18. The saddle carries the fork 35, in which horizontally swings the lens 36. The lens is rotatable by the becomes necessary, to produce on the paper or surface 28 an ima e of the desired size. The size can be varied y moving the lens toward or from the ob ect, by moving the prism-holder 27 toward or from the object, ,or b raising or lowering the' extension-7, whic varies the distance of the prism from the paper or surface 28. By the various adjustments described the image may be enlarged to any degree. The lens and prism may be swung to accommodate themselves to any angle from which the view is desired. The rays of light from the ends of the object 3 will pass through the convex lens by which the light entering the lens appears to come from an object larger than the object 3, as is shown b the dotted line on Fig. 1. The rays of light will be made further divergent by the prism in the holder 27, and the eye 38 looking down through the upper acute angle and combinations shown and described, but

reserve the ri 'ht to; include within my invention all modifications which embody the spirit thereof. j

Having described my invention, I claim 1. In ah apparatus for producing images of objects, a vertically-adjustable support, a horizontal rod carried by the support and adjustable thereon, a lens carried b said rod andadjustable thereon, a prism a so carried by said rod and adjustable'to'ward and from the lens, and a support to receive the image.

2. In an apparatus for producing ima es of objects, a sup ort; a horizontal rotata le rod carried there y, a prismadjustable longitudinally of the rod, and a support for the image. I

3. In an apparatus for producing images of objects, a support, a horizontal rod carried thereby, an arm supported by said rod and adjustable therealong, a lens supported on said arm, a fprism arranged to transmit the real image 0 port for the virtual image.

4. In an ap aratus for producing images of objects, a orizontal rod, a support sethe object to the eye'and a supcured thereto, an arm. supported and guided by said rod and support and adjustable the'realong, a lens carried on said arm, a 35 prism, and an image-support.

5. In an apparatus for producing images of objects, an object-support, a lens and a prism,pivotally adjustable in the same plane, and an image-support.

6. In an apparatus for producing images of objects, a horizontal rod, an arm projecting therefrom, a lens carried by the arm, a second arm carried by the rod, a prism carried by the second arm, and a support on which the virtual image of the object may be seen.

7. In an apparatus for roducing images ofobjects, a orizontal rod an arm projecting therefrom, a lens carried by the arm, a second arm carried by the rod, a prism car ried by the second arm, and adjustable transversel thereof.

8. 1 11 an apparatus for producing images of objects, a vertical telescopic support, a telescopic rod carried thereby, a prism carried by the rod, a'lens, and an image-support.

Signed at Pittsburg, Pennsylvania, this 13th day of December, 1904.

JAMES R. HOOPER.

Witnesses:

F. N. BARBER, A. M. STEEN. 

